Advance your knowledge and skills in business and finance on this top up course. You can tailor your studies to the career you want to follow and develop your existing qualifications into a degree. Multiple costing or composite costing: When the output is comprised of many assembled parts or components, as with television, motor cars, or electronics gadgets, costs have to be ascertained for each component, as well as with the finished product. Such costing may involve different methods of costing for different components. Therefore, this type of costing is known as composite costing or multiple costing.